First check to see if the pilot light is burning. The pilot light heats the Thermocouple which sends a signal to the gas valve allowing the delivery of gas to the hot water tank. If the Thermocouple is defective, it won’t send this signal. Always check to see that the RV hot water tank bypass valve is closed allowing water to enter the tank.
Thermocouples aren’t expensive and it is always a good idea to carry a spare. Other RV hot water tank parts may include an anode rod. This rod should be replaced at 75% decomposition. It prevents harmful damage to the tank by absorbing these damaging minerals in the tank. If this doesn’t solve the issue with your RV hot water tank repair problem, give us a call.